default-params.js

// Default Function Parameters
// new ES6 feature allowing us to provide
//default values for function parameters

function sendMessage(email, message, title="message"){
    if(!email || !message){
        return false;
    }
    //title = title || "";
    //fancy code to send the message
    title = title.toUpperCase();
    console.log(title);
    console.log(message, '\n');
    return true;
}

sendMessage('fry@planetexpress.org', 
            'You got the raise!', 
            'Good news!');

sendMessage('fry@planetexpress.org', 
            'nvm. My mistake. It was Scruffy who got the raise.');